. Advances in marine biology: volume 17. Coral fisheries. ECOLOGY AND TAXONOMY OF Halimeda 215. Fig. 71. Early stages in the clonal de\cl()i)iiieiit in H. inonile bj- disintegration of older thallus, and eventual development of new holdfasts near the bases of actively growing branches. In this way several vegetative thalli are produced. Two of the actively growing erect branches have whitish to pale green apical segments which are less than 48 hours old. Scale bar is 1 cm. parental filament is epii3hyte-free. Cloning in Halimeda serves as a defence against epiphytes even as it increases the nu
. Advances in marine biology: volume 17. Coral fisheries. ECOLOGY AND TAXONOMY OF Halimeda 215. Fig. 71. Early stages in the clonal de\cl()i)iiieiit in H. inonile bj- disintegration of older thallus, and eventual development of new holdfasts near the bases of actively growing branches. In this way several vegetative thalli are produced. Two of the actively growing erect branches have whitish to pale green apical segments which are less than 48 hours old. Scale bar is 1 cm. parental filament is epii3hyte-free. Cloning in Halimeda serves as a defence against epiphytes even as it increases the numbers of the plants. C. Reproduction in other Caulerpales The genera Penicillus, Ehipocephalus and Udotea also produce new thalli by filamentous runners from holdfast filaments (Colinvaux et al, 1965; Colinvaux, 1968b, c; Hilhs-Colinvaux, 1973, includes earlier literature). In aquaria the filamentous connections have been of a single filament or several to many intertwined filaments. The connections observed have been considerably more delicate than the rhizome-like connections illustrated by Duchassaing (1850) for Penicillus ( =Nesea), and by Ernst (1904) for Udotea, and they do not appear to persist. New. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hillis-Colinvaux, Liewellya. London : Academic Press ; Toronto
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